When using the command line interface with the file:/ syntax.
When attempting to validate an html files that end in the extension ".htm" the validator does not correctly recognize the file as an HTML file.
This change adds a test for the file suffix ".htm"
/css-validator/src/org/w3c/css/css/DocumentParser.java
Around line 58 add a test for the shorter extension.
} else if (urlLower.endsWith(".htm") ||
urlLower.endsWith(".html") || urlLower.endsWith(".shtml") || urlLower.endsWith("/")) {
A test for this looks like this:
java -jar css-validator.jar -vextwarning true -profile css3 file:/C:\workspace3_4\css-validator\testdata\testhtm.htm